Edge detection on polynomial texture maps (Contributo in atti di convegno)

Type
Label
  • Edge detection on polynomial texture maps (Contributo in atti di convegno) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/978-3-642-41181-6_49 (literal)
Alternative label
  • Brognara C., Corsini M., Dellepiane M., Giachetti A. (2013)
    Edge detection on polynomial texture maps
    in ICIAP 2013 - image Analysis and Processing. 17th International Conference, Naples, Italy, 9-13 September 2013
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Brognara C., Corsini M., Dellepiane M., Giachetti A. (literal)
Pagina inizio
  • 482 (literal)
Pagina fine
  • 491 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://link.springer.com/chapter/10.1007%2F978-3-642-41181-6_49 (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
  • PuMa (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Università di Verona; CNR-ISTI, Pisa, Italy; CNR-ISTI, Pisa, Italy; Università di Verona. (literal)
Titolo
  • Edge detection on polynomial texture maps (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 978-3-642-41180-9 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • Alfredo Petrosino (literal)
Abstract
  • In this paper we propose a simple method to extract edges from Polynomial Texture Maps (PTM) or other kinds of Reflection Transformation Image (RTI) files. It is based on the idea of following 2D lines where the variation of corresponding 3D normals computed from the PTM coefficients is maximal. Normals are estimated using a photometric stereo approach, derivatives along image axes directions are computed in a multiscale framework providing normal discontinuity and orientation maps and lines are finally extracted using non-maxima suppression and hysteresis thresholds as in Canny's algorithm. In this way it is possible to discover automatically potential structure of interest (inscriptions, small reliefs) on Cultural Heritage artifacts of interest without the necessity of interactively recreating images using different light directions. Experimental results obtained on test data and new PTMs acquired in an archaeological site in the Holy Land with a simple low-end camera, show that the method provides potentially useful results. (literal)
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